Isn't clay, carbon and silt? (silt=fines)

Heres the funny part, you are doing great work to determine if your soil has clay or not. But your missing the easist test. And by far the most important test.

This test is done by placing the soil in the cage and seeing if the monitor successfully uses it. If it works, great. If it does not, it does not matter if there is clay or not in it. It will still not work.

If I remember correctly, your soil was sealing when wet down. I may have mentioned this is most commonly caused by clay(it is) But that is not the only cause. Cheers

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